Lubricator.



wohn-5,188. PATENTED Nov. 29, 1904. M. LA QUAY. LUBRIGATOR.

APPLICATION FILED PEU- 11, 1903.

N0 MODEL.

v upper wall.

N ITED STATES Patented November 29, 1904.

PATENT Orricn.

LUBRICATQR'.

SPECIFICATION forming partof Letters Patent No. 776,188, dated November 29, '1904.

Application iiled December 14, 1903. Serial Nox 185,157. (No model.)

To LZ/1 whom, t may concer/'n.-

Be it known that I, MALON LA QUAY, a citizen of the United States, residing lat Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Lubricators, of which the Vfollowing is a specification.

This invention refers to lubricators, and has for its object the production of a lubricator embodying the several improvements hereinafter pointed out.

The form herein shown is adapted particularly to lubricate the cylinders of air-compressors; but it is also applicable to other uses.

The even application of a small quantity ot" oil to lubricate a cylinder is much more desir-able than the application of a large quantity at intervals, and this even application is obtained by the use of the device hereinafter described.

In the accompanying drawings, Figure 1 is a vertical central section of a lubricator embodying the features of this invention. Fig. 2 is a similar view showing a modiiied form of said invention.

In the construction of this improved lubricator I provide an oil-container 1, having a filling-opening 2 at its upper end, adapted to be closed by the screw-threaded closure 3, and provided at its lower end with a stem 4, externally screw-threaded for a portion ot' its length for purposes of attachment to a cylinder. `(Not shown.) In the upper end of the stem 4L I provide a recess 5, opening directly into the interior of the oil-container 1, the side walls of which recess 5 are screw-threaded, and in the lower end of the stem I form a similar recess 6, opening outwardly, the side walls of said last-mentioned recess being also screw-threaded. The recesses 5 and 6 are connected by an opening 7, within which opening lies a sliding oil-feeding plunger 8, fitting loosely within said opening. A ball-cup 9, externally screw-threaded, is adapted to be secured within the recess 5, said ball-cup being provided with an axial opening 10 in its A similar ball-cup 11 is adapted to be secured within the recess 6 and is provided with a .central opening 12 in its lower side. A closure-ball 13 is placed within the ball-cup 9 and a similar closure-ball 14 within the ball-cup 11. The ball 13 is adapted to close the upper end of the opening 7 and the opening 10, and the ball 14 is adapted to close the lower end of the opening 7 and the opening 12.

When the parts are in the position indicated in Fig. 1, oil may be placed within the container 1, and its escape will be prevented by `the balls 13 and 14E seating upon the upper edges of the openings 7 and 12. When air or other pressure is exerted upward through the opening 12, the ball 14: is raised to the upper end of the ball-cup 11, which movement also raises the feeding-plunger 8 and the ball 13. In this raised position the ball 111 rests against the lower end of the opening 7 and the ball 13 against the opening 1Q. pressure is removed from the opening 12, the balls 13 and 14, with the feeding-plunger 8, fall, carrying downward into the ball-cup 11 a very small quantity of oil. At the next upward movement of the balls 18 and 14 and the plunger 8 the oil within the ball-cup 11 iiows downward through the opening 12 into the aircompression cylinder, (not shown,) and with the next downward movement of the plunger 8 another minute quantity ot' oil is introduced, into the ball-cup 11. As will be v understood, the quantity of oil fed downward from the ball-cup 9 to the ball-cup 11 at each downward movement of the plunger 8 is very small, being governed bythe amount of space between the walls of the opening 7 and the plunger 8.

vWhen 6 to an internally-threaded recess formed in the lower end of the stem 4?. An opening 7, containing a feeding-plunger 8, loosely slidable in said opening, is connected with the interior of the oil-container 1a by means of the duct 10u. A ball-cup 11, externally screwthreaded, is adapted to lie within the recess 5 plunger 8EL is adapted to contact the upper end ofthe opening 7a, and thus close the duct 101.

j "In operation the movable parts of said modi- Lled form of lubricator normally lie in the posltion shown 1n Fig. 2, the escape of oil from IO the container 1L being prevented by the ballclosure 132 Wvhen pressure is introduced into the opening12, the ball 13" and the plunger 8 are raised. The opening 12 being uncovered, a quantity of oil will iiow from the I5 interior of the ball-cup 11 into the compression-cylinder. (Not shown.) Upon the reverse movement of the piston within saidcylinder the ball 13fL will be seated upon the opening 12" and the plunger SL will fall` bringing 2O downward with it into the ball-cup l1" a small quantity of oil. At each upward movement of the ball 13 oil thus escapes into the compression-cylinder, and at each downward movement of the plunger A the ball-cup l1 is supplied with oil.

It is apparent that the embodiments herein shown of this invention are susceptible of various modifications without departing from the spirit and scope of my invention, wherefore I desire to have it understood that I do not limit myself to the precise details herein set forth.

I claim as my invention- 1. In a lubricator, in combination, an oilcontainer having a discharge-passage; a ballclosure for the lower end of said passage; and a feeding-plunger lying within said passage and adapted to rest upon said ball.

2. ln a lubricator, in combination, an oilcontainer having a discharge-passage; a ballcup at the lower end of said passage; a ball within sa1d cup for closing the lower end of said passage; and a feeding-plunger lying within said discharge-passage and adapted to rest upon said ball-closure.

3. In a lubricator, in combination, an oilcontainer having a discharge-passage; two ball-cups forming a portion of said passage and located at opposite ends thereof; a ballclosure for said passage within each of said ball-cups; and a feeding-plunger adapted to lie loosely within said passage intermediate said closure-balls.

4. In a lubricator, in combination, an oilcontainer; a securing-stem for said container, said stem having a recess in each of its ends; a ball-cup in each of said recesses, said stem having' a discharge-passage extending through said ball-cups and the stern; a closure-ball for each of said ball-cups; and a plunger adapted to lie in said discharge-passage between said closure-balls and to feed oil through said passage.

In a lubricator; in combination, an oilcontainer having a discharge-passage; a closure freely supported within said passage for closing one end thereof; and a second closure also freely supported within said passage for closing the opposite end thereof.

6. ln a lubricator, in combination, an oilcontainer having a discharge-passage; a closure freely supported within said passage for closing one end thereof; and asecond closure also freely supported within said passage for c losing the opposite end thereof, said closures being arranged and adapted to move together.

7. ln a lubricator, in combination, an oilcontainer having a discharge-passage; a closure-ball at the opposite ends of said passage for closing said ends; and a plunger' within said passage adapted to rest upon one of said balls and to move the other ball.

MALON LA QUAY.

Vitnesses:

A. C. KITTLEsoN, GEORGE L. CHINDAHL. 

